swamplink

← Counting Dogs & Tails · all breeds · charts · compare

American Staffordshire Terrier

origin: United States · 10 figures in the corpus · Q37688

Every figure below carries this breed's name or id in its source study -- grouped by what it measures, not ranked. A breed appearing under a study here does not mean every other breed was tested and came back negative; it means this is what has a named source so far. See each figure's own page for its caveats.

Longevity

12.5 years (median survival) verified

American Staffordshire Terrier: median survival age, UK veterinary clinic population

  • UK primary-care veterinary clinic population (VetCompass), not a census of all dogs of the breed.
  • Hazard ratio vs. the crossbred reference group: 1.09 (95% CI 0.89-1.33, p=0.40).

Size & head shape

2 size class (1=Small, 2=Medium, 3=Large) verified

American Staffordshire Terrier: body size class -- Medium

  • Body size and cephalic index classification per Supplementary Table S5; for breeds absent from the study's primary source lists, assigned by majority agreement among Dogs Trust canine-behaviour experts rather than measured directly on dogs.
2 cephalic type (1=Brachycephalic, 2=Mesocephalic, 3=Dolichocephalic) verified

American Staffordshire Terrier: head-shape (cephalic index) classification -- Mesocephalic

  • Body size and cephalic index classification per Supplementary Table S5; for breeds absent from the study's primary source lists, assigned by majority agreement among Dogs Trust canine-behaviour experts rather than measured directly on dogs.

Group

1 group membership (see subject) verified

American Staffordshire Terrier: FCI group: Terriers

  • KC/FCI group columns record nomenclature presence only, per the table's own caption -- the study did not use group as an analysis variable.

OFA (hip & elbow)

25.7 percent evaluated dysplastic preliminary

American Staffordshire Terrier: hip evaluations rated dysplastic (mild/moderate/severe combined), OFA cumulative statistics

  • OFA is a voluntary-submission registry: owners/breeders choose whether to have a dog evaluated and whether to submit the result, so this is not a random sample of the breed and most likely understates true population prevalence.
18.2 percent evaluated abnormal preliminary

American Staffordshire Terrier: elbow evaluations rated abnormal (grade 1-3 combined), OFA cumulative statistics

  • OFA is a voluntary-submission registry: owners/breeders choose whether to have a dog evaluated and whether to submit the result, so this is not a random sample of the breed and most likely understates true population prevalence.

Temperament

13.8 percent scored 'high' fear preliminary

American Staffordshire Terrier: share of surveyed dogs scored high on the Fear trait (Salonen 2020, Finnish pet dogs)

  • Self-selected online convenience sample of Finnish pet owners, not a random sample of the breed or of all dogs.
  • Restricted to breeds with at least 50 surveyed dogs to avoid small-sample noise.
22.5 percent scored 'high' noise sensitivity preliminary

American Staffordshire Terrier: share of surveyed dogs scored high on the Noise sensitivity trait (Salonen 2020, Finnish pet dogs)

  • Self-selected online convenience sample of Finnish pet owners, not a random sample of the breed or of all dogs.
  • Restricted to breeds with at least 50 surveyed dogs to avoid small-sample noise.

Bite rate

17.342 bites per 1,000 licensed dogs preliminary

American Staffordshire Terrier: NYC bite reports per 1,000 licensed dogs of this breed, all years combined

  • One city only (NYC); breed labels are self-reported, not verified against a registry or genetic test.
  • Licensed-dog counts are active-license snapshots per extract year, not a true owned-dog population.

Other

1 purpose class: hunting: terrier verified

American Staffordshire Terrier: purpose class 'hunting: terrier', from FCI group: Terriers

  • Registry group membership at time of the source table, not an independent behavioural assessment.